We could not hear Dr. John -- either his vocals or keyboards -- or any of the other band members except the drummer, because the sound mix was so unbalanced, the drums drowned out everything else. This was true throughout the show, from start to finish, except for a couple of rare and brief moments when Dr. John or the other players solo'ed.
Our party of five at the concert (including three accomplished musicians) all agreed about the very poor audio engineering.
So frustrating! What a shame. I don't think it's a matter of poor acoustics at Town Hall, as we've heard other musicians there, such as Neil Finn some years ago, who sounded great.